Materials and Process Engineer

Role Summary

In this role, you will own the materials and process foundation of our medium voltage Solid State Transformer products. Solid state transformers concentrate high voltage, high frequency, and high power density into a fraction of the envelope of traditional equipment - and that makes the insulation system, the potting, the coatings, and the interfaces between them the deciding factor in whether a product passes qualification and survives twenty years in the field. You will lead material selection, develop and qualify the processes that put those materials into the product at rate, and drive the characterization and failure analysis that proves they work. You will partner closely with design, manufacturing, quality, and supply chain, and you will be the technical authority on materials decisions across the platform. This is hands-on work on real hardware, with a short path from the experiment you run this quarter to the machine that ships next.

Responsibilities:

• Own material selection across dielectrics, polymers, resins, composites, and coatings, balancing electrical performance, manufacturability, cost, and long-term reliability.
• Lead process development and qualification for potting, coating, casting, molding, thin film deposition, and related processes.
• Define key process parameters, processing conditions, and processing windows, and work with manufacturing and quality to establish production feasibility and control limits.
• Own materials characterization through a combination of in-house testing and third-party labs, including dielectric, thermal, mechanical, and chemical performance.
• Lead root-cause and failure analysis on materials and process issues across design, manufacturing, and field domains, identifying the mechanism rather than the correlation.
• Source and co-develop novel materials with suppliers when commercially available options cannot meet product requirements.
• Partner with external vendors and internal teams on process equipment selection and optimization to improve material properties and processing capability.
• Influence system-level trade-offs across insulation design, thermal management, packaging, power density, cost, and manufacturability.
• Ensure materials and process solutions scale across product variants and future platforms.
• Elevate materials engineering standards through rigorous design reviews, structured experimentation, and documentation.

Qualifications:

• Bachelor's or Master's degree in Materials Science and Engineering, Chemical Engineering, or a related field.
• 5+ years of experience in materials processing in production-relevant settings, such as coating, injection molding, casting, potting, or thin film deposition.
• Direct experience and deep understanding of polymers, resins, particles, coating formulations, and composite materials, including how they cure, age, and fail.
• Strong command of fundamental materials properties - dielectric, electrical, thermal, mechanical, and chemical - and how they trade against one another.
• Strong hands-on experimental skills and demonstrated process development capability.
• Proven ability to drive material and process development by combining data-driven metrics with fundamental mechanisms.
• Extensive hands-on laboratory and production floor experience, including leading characterization and validation activities.
• Demonstrated ability to partner with external vendors and internal teams to take a process from initial feasibility to repeatable production.
• Demonstrated ability to independently resolve complex, cross-domain technical challenges and drive cross-functional trade-off decisions.

Bonus Qualifications:

• MS or PhD in Materials Science and Engineering, Chemical Engineering, or a related field with 5+ years of industry materials processing experience.
• Experience in the development of dielectric materials.
• Deep understanding of partial discharge, dielectric breakdown, and electrical insulation materials.
• Exposure to medium-voltage power electronics systems.
• Experience taking a material or process through qualification for a high-reliability product in power, aerospace, automotive, or semiconductor.
• Experience supporting products from R&D through production release.
• Experience contributing to patents or novel materials and process techniques.

SF Pay Range

$120,000-$160,000 USD

Please note: This role requires working on-site 5 days a week. We do not offer hybrid or remote options.

While this role is listed for the location above, we may consider candidates in other locations on a case-by-case basis.

Onsite Collaboration Rationale:

Given the highly collaborative and cross-functional nature of hardware, embedded systems, and product development, in-person partnership across engineering and product teams is critical to enabling rapid execution, technical alignment, and successful development outcomes.

Pay Disclosure & Benefits

Compensation will be determined based on experience, location, and other factors permitted by law.

The benefits outlined below apply exclusively to employees located in the United States:

• Competitive Salary + Incentive Stock Options

• Medical, vision, and dental benefits for employees and their dependents, effective from the start of hire

• Company paid Basic Life, AD&D, short-term and long-term disability insurance

• 401k retirement savings plan through Empower

• Employees receive paid time off (PTO), paid sick days, and paid company holidays

• Commuter Benefits

• 100% paid maternal leave (12 weeks) and paternal leave (6 weeks)

The benefits outlined below apply to employees located in Singapore:

• Competitive Salary + Incentive Stock Options
• Group medical, hospitalisation and surgical insurance, outpatient or GP coverage, group term life, dental and personal accident insurance
• Employer and employee Central Provident Fund contributions in accordance with the CPF Act (for Singapore Citizens and Permanent Residents)
• Annual leave, paid sick leave, hospitalisation leave, and all Singapore public holidays, in line with or exceeding the Employment Act
• Commuter Benefits
• Government-paid maternity, paternity, shared parental, and childcare leave in accordance with prevailing Singapore statutory entitlements

Additional benefits may be available depending on the role and employment type. Benefits are subject to the terms of applicable company policies and plans.

Candidate Confidentiality & Information Protection

As part of our commitment to protecting confidential and proprietary information, candidates should not disclose or provide Amperesand with any confidential, proprietary, or trade secret information belonging to a current or former employer or any other third party during the application or interview process.

Please do not submit or present employer-owned source code, schematics, designs, technical documentation, internal presentations, customer information, prototypes, or other confidential materials. Candidates should discuss their experience and accomplishments at an appropriate level and use only information and materials they are authorized to share.